Mask breathing air tightness tester test method

Breath valve air tightness test method:

1. After sealing the fixed volume cavity with the airtight inspection cover, the system is pumped to a negative pressure state of 1180Pa, and the pressure change should not be observed within 2 minutes after closing the control valve.

2. The sample to be measured is installed on the fixed capacity cavity, and ensures the tight fit, so that the system reaches a negative pressure state of 1250Pa at a pumping rate of not more than 500mL/min, and the control valve is closed.

3. Start timing when the negative pressure of the system drops to 1180Pa, and record whether the time required for the system to recover the pressure is less than 20S

Expiratory bonnet test method: Fix the expiratory bonnet and mask body of the sample to be measured separately with appropriate fixtures (the fixing point should be reasonably close to the corresponding connection site). Start the material testing machine and apply it

Record whether there is fracture, slippage, deformation phenomenon.

Airtightness test method: wear the mask on the matching test head mold, seal the suction valve, and wet the exhalation valve. Start the vacuum pump, bring the negative pressure inside the mask to 1000 Pa, stop pumping, and start the meter

Observe and record the negative pressure drop value in the mask within 60s.

The main features of the mask breathing air tightness tester:

Realize automated detection, simple operation, no need for skilled labor, saving manpower

No need to dry the workstation, improve the working environment, easy maintenance

Improve the accuracy of testing, quantify leakage, reduce the failure rate, and realize the statistical analysis of data

Reduce complaints, shorten testing time, and save costs

Achieve non-destructive testing, high reliability, very suitable for the testing of electronic products

Curve simulation display of time and leakage dynamics

Full-featured input and output interfaces for control of external fixtures

The mask air tightness tester also has the function of bubble testing

Enforce standards

GB/T 32610-2016 Technical specifications for daily protective masks

GB 2626-2006 Respiratory protection - Self-priming filtered anti-particulate respirators

GB 19082-2009 Technical requirements for medical disposable protective clothing

GB 19083-2010 Technical requirements for medical protective masks

TAJ 1001-2015 PM2.5 Protective Mask

YY 0469-2011 Medical surgical masks